CVE-2021-34291 in JT2Go
Summary
by MITRE • 07/13/2021
A vulnerability has been identified in JT2Go (All versions < V13.2), Teamcenter Visualization (All versions < V13.2). The Gif_loader.dll library in affected applications lacks proper validation of user-supplied data when parsing GIF files. This could result in an out of bounds write past the end of an allocated structure. An attacker could leverage this vulnerability to execute code in the context of the current process. (ZDI-CAN-12956)
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Analysis
by VulDB Data Team • 07/16/2021
The vulnerability identified as CVE-2021-34291 represents a critical security flaw in JT2Go and Teamcenter Visualization software versions prior to V13.2. This issue stems from improper input validation within the Gif_loader.dll library component responsible for processing GIF image files. The affected applications are widely used in engineering and product design environments where visualization of complex 3D models and technical drawings is essential for collaborative work processes.
The technical root cause of this vulnerability manifests as an out-of-bounds write condition that occurs when the Gif_loader.dll library fails to properly validate user-supplied data during GIF file parsing operations. When a malformed or specially crafted GIF file is processed, the library attempts to write data beyond the boundaries of allocated memory structures, creating potential opportunities for memory corruption. This type of vulnerability falls under the CWE-121 category of "Stack-based Buffer Overflow" and aligns with ATT&CK technique T1059.007 for "Command and Scripting Interpreter: PowerShell" when considering the potential for privilege escalation and code execution scenarios.
The operational impact of this vulnerability extends beyond simple denial of service conditions, as it creates a pathway for remote code execution within the context of the currently running process. Attackers who can influence the processing of GIF files through these applications could potentially execute arbitrary code with the same privileges as the affected application. This presents significant risk in enterprise environments where these visualization tools are frequently used to process files from external sources or collaborative platforms, as the attack surface expands to include any user with the ability to upload or share GIF files that could trigger the vulnerable code path.
Organizations utilizing affected versions of JT2Go and Teamcenter Visualization should prioritize immediate remediation through official vendor updates to V13.2 or later versions. Additionally, network segmentation and access controls should be implemented to limit exposure of these applications to untrusted file sources. Security monitoring should focus on detecting unusual file processing patterns and potential exploitation attempts through GIF file uploads. The vulnerability demonstrates the importance of input validation in multimedia processing libraries and highlights how seemingly benign file format handling can create critical security risks in enterprise software environments where visualization tools process large volumes of external content.